Electric furnace.



A. HELFENSTEIN.

ELECTRIC FURNACB.

APPLICATION FILED JAN. 29, 1913.

1,082,195, n Patentedneaz, 1913. F IE F 15.2

installa-tion. For this purpose acc' UNITED sTATEs raTENT onirica. l

LOIS `HELFENSTEIN, OF VIENNA, AUSTRIA-HUNGARY.

ELECTRIC FURNACE,

To all 'whom t may concern Be it known that LALOIS HnLTnNsTniN, a citizen of Switzerland, residing at 50 tiengasse, Vienna, Austria-Hungary, hare invented new and useful improvements in Electric Furnaces, of which the 'following is a specification.

This invention relates to closed furnaces. y

It is known to remove 'the gases of reaction below the receptacle for the charge into laterally arranged gas eliminating chambers in connection with superpcsed charged receptacles The drawing ed' of the g es at the upper end of the chaiffing shaft is also knowr {See the furnaces o' f onwall, 'Lindeblae :wird Stalhane as also Tiunbull in- Dr. Paul sliensays Die Techn/sche Eickroc/zmie volu l.)

It has been found that 'for obtaining pure, cooled furnace gases it is particularlyadvantageous to draw the latter off laterally from the receptacle for the charge su rrounding the electrodes, while retaining the mii:- ture as a packing medium for the rf electric the present invention, pipe juncti let into the sides ci' the rcccptf charge, which being distribr i' electrodes, iusi l`ne ascend drawn @E u lor; i

Compared with `Known arrangements (for example that of the Austrian Patent #2811 this device has the adifantage that 'the gases must still` through apart of the inistture in the receptacle for the charge, and. are purified and further coole lt however be also employed in coin nation with 'the known arrangement if oniy a portion of vthe furnace gases have to be obtained in a cooled and purified forni. compared with the drawing olif c? 'the furnace gases in the 'upper part of' the recel tacle for the charge the present invention has'the considerable advantage, that in the case of freely movable electrodes the miro ture itself eects the packing, excluding the entry of vicious air, whereas otherwise` coinplicated packing constructions must be rrranged. Beyond this in 'the present invention there is the further advantage that the gas 4ilischarging device, which in the case of electrodes arranged centrally above the .smelting 'hearth remains freely movable, and the "'arrange1nents :for supplying the Specification of Letters Patent.

Application led January 29, 15213.

Patented Dec. 23, 1913.

Serial No. 744,921.

current is `not disturbed and the electrode may readily be exchanged. The V`iunctions may also be formed by inserting ,uninter- 'ruptedpartitions in the charging receptacle,

which forni gas-chambers around the electrodes surrounding the mixture, or the upper part of the receptacle for the charge may consist or' a bell with double sides, the inner part oi" the bell serving for they reception of electrodes and mixture and the outer part respectively the space of the bell situated between the double sides for obtaining the gas.

Different forms of the invention are illustrated in the drawing by way of example.

In the 'form illustrated in 'vertical transverse section in Figure l, a is the receptacle for the charoe placed on. the furnace through which'the electrode runswfrom above. In the `receptacle a the junctions c1 and o2 are inserted which serve for conveying the gas out of the saine.

ln the forni of the invention shown in A L part ci the charge receptacle a, is .in the form ci' it bcll'with double sides (Zl and ch the gas eliminating around the electrode, gases are carried oil1 Y pipes f1 and f2. lxention is illustrated in horize .tal section through the three charge )mele-s in connection with a tri-phase ce and in such a manner that the irn- V charge receptacles a?- a? are cach di vided by the partitions g1- g2 into an inner c je hopper fz, and gas chambers l and 'i2 w )ich are connected therewith. The gases are carried ol'lq into a common gas pipe Z1` and 2 through the gas pipes 71.21 and k2.

Having now particular-lf.7 described and ascertained the nature of my said invention, and in what manner the same is to be performed, l declare that what l claim is:

l, in a closed electric furnace of the charactor described, the combination with the furnace chamber, of a hopper for the charge, a vertical electrode extending through said hoppe, and means within the charge receptacle on top of said chamber for laterally exhausting the gases of combustion and forA preheating said charge and cooling said gases of combustion, substantially as described.

2. n a. closed electric furnace of the char- Tief, 2 likewise shown in vertical section, the

a'eter described, the combination with the i and for preheating said charge and coolfurnace chamber, of' a hopper for the charge, ing said gases, substantially as described. 1o

a vertical electrode extending through said In testimony whereof I affix my signuhopper, and u. double Walled bell-shaped tuie in presence of two Witnesses. .E 5 body surrounding the electrode und the A LOIS HELFENSTEIN.

charge providing an annular space between Witness/es:

the double Walled bell-shaped body for at- IeNAz KNORFALMAGHER, x dHy exhaustmg the gases of combustion AUGUST FUGGER. 

